i have by mistake removed important graphical desktop packages.
due to some bug or error i cannot switch to latin letters, so cannot login, because cannot write user name (and password), if i go to recovery root, also same situation, i cannot write any command. (if i try alt+shift, and several other shortcuts, they do not work).
i would fix the installed system, it is ubuntu 12.04, with live usb flash drive of ubuntu 12.04. how to do it?
(incorrect console keymap was before deleting desktop, and then i managed to get us keymap temporarily, before next reboot, with "sudo dpkg-reconfigure console-data").
i think i need to fix it with live usb flash drive. but may be just a correct shortcut to change keymap is enough...